After the victory at Wakefield Margaret marched towards London, and was met at St. Albans by Warwick. The Lancastrians gained the day, the king [Henry VI] was released, and Warwick compelled to retire.

But with incredible folly the results of the battle were altogether thrown away. London was not occupied, nor was the Earl of Warwick prevented from effecting a junction with Edward. The Lancastrians retired to the north, and within a fortnight the Yorkists were in possession of London, and Edward recognised as king.

The Dictionary of English History. Sidney J. Low and F. S. Pulling, eds.
London: Cassell and Company, Ltd., 1910. 903.